In cases where you are informed of unusual symptoms on your car, you are right to be intrigued, because a car represents a huge annual budget and unexpected malfunctions don’t reduce the expenses. So what if you feel like you have a leaking injector on your Opel Antara? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or uncommon black smoke. These three manifestations are the main symptoms of a leaking injector. As this troubles can end up in more severe engine complications on your car, we thought we would publish this article content to help you validate the failure of a leaking injector and handle it properly. To do so, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Opel Antara.

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Leaking injector on my petrol Opel Antara

It is vital to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. The main difference lies in the pressure undergone by the injectors, on a petrol engine it will vary between 3.5 bars for indirect injection and 120 bars for indirect injection.

Leaking injector on a petrol Opel Antara: The different leaks

It should be mentioned that injector leaks on a Opel Antara equipped with a petrol engine are pretty rare. This is due to the much lower pressure in the petrol intake systems. Even so, there are two kind of leaks:

  • Leakage from the top of the injector:
    It is possible that you have a leak from the top of the injector, this is the portion that is attached to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    Finally, you may suffer a leak coming from the lower part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Opel Antara

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates very high pressure in the engine, as do the injectors. On these models, the pressure is more than 10 times higher than on the direct injection of car petrol engines, reaching 1800 to 2000 bars.

Leaking injector on diesel Opel Antara: The different leaks

In the circumstance of leaking diesel injectors on your Opel Antara, there are three several kind of leaks:

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform over time, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Opel Antara will be the result of an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should find an air noise and a compression loss.
  • If after verifying you have oil leaking but it does not come from your injectors, we suggest you to browse this article content on the existence of oil leaking on your Opel Antara.

Leaking injector on my Opel Antara, how to fix the leak

And to finish, we’re going to look at how to fix a leaking injector on your car. Very often a leak is linked, as we have seen prior to this, to a worn seal as a result of the pressures endured. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is completed…
  • Masking you to avoid the risk of fuel spillage
  • NEVER work on a running diesel engine injector.

Relating to the repair part of your leak, it will oftentimes be limited to replacing the seals that have failed:

  • Find the source of the leak
  • Take apart the injector in question
  • Change the corresponding seal kit
  • Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.

In all cases, these interventions are not necessarily complex, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Opel Antara, we suggest you to get closer to your auto technician to avoid any bad manipulation that could significantly harm the condition of your Opel Antara.

To get more tips on the Opel Antara, take a look at the Opel Antara category.